August 3, 2010 by staff 

OvineOvine, A higher prevalence of ovine Johne’s disease in southeastern Australia has been a warning to sheep farmers to vaccinate all breeding ewes.

The warning, both beef and sheep Council of Australia and WoolProducers, coincides with reports that the increase in herd infection is threatening commercial areas in southern NSW and Victoria.

According to current zoning provisions, in western Victoria and southwestern herds and western NSW are assessed as having low prevalence of OJD, with a credit score of four under the assurance system based on credit. South Australia also has a score of 4.

The rest of Victoria is the average prevalence, with a less favorable score of 2, while NSW Southern Highlands has a high prevalence, with a zero credit score.

The producers of a given area does not fit in ewes with an ABC score comparable or higher.

ABC scores flock can be increased by vaccination or participation in a market assurance program.

Sheep Kate Council president Jose this week admitted the current system is struggling to keep OJD, a degenerative disease under control.

“My advice to producers is to vaccinate all sheep breeders and other extended beyond one year,” said Mrs. Joseph.

“Certainly there is no need to vaccinate the handset.”

And while sheep can be vaccinated at any age, Ms. Joseph said the time was marked lamb preferable to provide maximum protection and because the sheep were much easier and safer to handle and vaccinated.

“The lambs vaccinated before 16 weeks of age are protected from bacteria in contaminated pasture and thus attract additional credit under the ABC scheme,” said Mrs. Joseph.

He said the results of an abattoir monitoring last year indicate third NSW Southern herds were affected by OJD.

Abattoir surveillance in June last year found 567 infected herds in Victoria

And while the most recent data from animal health surveillance Australia has not yet been released, reports indicate a deterioration of the situation, prompting suggestions that a proposed revision of the areas in 2012 could be done in the coming months.

Such a review could jeopardize trade opportunities between western Victoria and the Riverina enjoyed.

WoolProducers president Don Hamblin also urges vaccination Gudair, not only to reduce mortality from the herd, but also promote business opportunities in a herd.

A vaccination costs and 2 Gudair on a sheep.

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